The conjugacy classes appearing as powers of the classes \(24J\)  and \(8C\)  are exactly the conjugacy classes which appear as harmonics of the first three conjugacy classes \(1A,2A\)  and \(2B\) , see [1]}. We have for these classes the harmonics
\(\begin{array}{|c|l|}\hline 1A & 1A,3C \\2A & 2A,4B,8C \\2B & 2B,4D,6F,8F,12J,24J \\\hline \end{array}\) 
